💡 [Feature]: Update ReadMe and Docs preview features after latest update of VS Code

[Adam-it]

🎯 Aim of the feature

Since the latest update of VS Code it is now possible to use GitHub chat participant in standard version of VS Code. We should:

• update the preview features section to standard feature
• update wiki

📷 Images (if possible) with expected result

No response

🤔 Additional remarks or comments

No response

[Adam-it]

done ✅